Calculating machine



Feb. 1, 1944. `A. J. FETTIGv CALCULATING MACHINE Filed oct. 1e, 193s;

12 Sheets-Sheet l a wEEm QN* 4l l e S c1 n m25@ R VN zmmm mm md R w Wmln J con R Rm. B Anm M/ mmm. w 32 NOM MOD 22 W Sv F2 n non B z 3R. n En2 E n nn 2 SEKS n n3 am JN 1 H NENH Bumm Bmm U l 1. @0 5 no B mcwd nonBuonw B 2-f3 n2., @n www 252 EF amm: Een Ez mmm: @n Ez amm: mwa: Sz ammo.E .mm m55 m mp5 mmm5- mm 235550 maan mm n GE mmm A. J. FE1-TIGCALCULATING MAHINE Feb. l, 17944.

File@ oct. 51e, 1939 12 sheets-sheet :s

, ,ma j ym Wm Amm/ A. J. FE1-'rie f CALCULATING MACHINE Filed oct. 1e,1959 12 sheets-sheet 4 i i AgjAUrAL/.mg V//W ATTORNEYS Feb. 1, y1944. vA. J. FETTIG v CALQULATING MACHINE Filed ont. 16, 1939 l 41:.sheets-sheet e .9.9 rfi/wr [Ce/Ill v wwf/w33 l ATTORNEYS Feb. `1, 1944.A. FET-G 2,340,372

CALCULATING MACHINE 4 Filed Oct. 16,. 1939 l2 SheetS-Sl'uieet 7 INVENTORFebgl, 1944. A J, `FETTIG `2,340,372

, l 1 l CALCULATING MACHINE Filed oct. 1e, 1939 12 sheetssheet 8 lNvNToRv ATTNEYS Feb. 1, 1 944. A. J. FETTIG CALCULATING MACHINE Filedoct. 1e,1939 -12 rsheets-sheet 9 INVENTOR J Fe i153 M g m/WZS ATTORNEYS Feb. l,1944. y A J. FE1-TIG Y 2,340,372

CALCULATING MACHINE Filed oct. 1e. 19:59 1-2 "sneeessheat 1n 2 1N VENTORAfr/w; a. fer/13 Y" A TT ORNE YS Febl; 1944. yA. FE1-TIG, 2,340,372

CALCULA'I' ING MACH INE Filed Oct. 1s, 1959` 12 sheets-sheet 11 INVENTORAffi/sw u. 2mg

A. J. FE1-TIG CALCULATING ,MACHINE Filed Oct. 16, 1959 l2 Sheets-Sheetl2 INVENTOR A cv Y www im dfVm nl 1MM I*l f A mf,

Patented Feb. l, 1944 UNITED s'rA'ri-:s

PATENT orrics 42 claims. (ci. 2st-so) This invention relates to acalculating machine. It is directed particularly to an improved machinefor use in preparing public utility lbills where. after an item oritemsare entered in the machine, said items must be printed in a multiplicityof places or columns on the bili.

Public utility bills are ordinarily made out on relatively long narrowforms which comprise a main section forming a "customers bill, to

gether with a plurality of detachable stubs such as the "cash" stub, thecollection" stub, and the ledger stub. The exact form oi' the bill andthe number oi stubs may vary with diiierent utility companies but thegeneral practice is to have a form that is made up oi the customers billand three detachable stubs. i

Whenan operator makes out a bill of this character for gas orelectricity. he enters (1) the date, (2) the presen or new meterreading, and (3) the "previous or old meter reading. These items arethen printed. Next, he enters (l) the difference between the two meterreadings, which constitutes the "consumption, and (2) the amount indollars and cents that is due from the customer. The "consumption" isread by the operator from a meter readers book where it has beenprecalcuiated and the amount due is determined from rate tables and italso is preoalculated. These items are then printed and the first printoccurs on the cus tomers bill" portion oi the form. However, thesemerous operations oi the complete calculating machine are required,during which operations no real calculating functions are necessary. Anpother solution has been to provide large complicated machines with aplurality of printing mechanisms, with arrangements for causing aplurality of these printing mechanisms to operate simultaneously tothereby print the same items in several columns or spaces. But thisinvolves an expensive, complicated machinethat is specialized for thiswork and which is not particularly suitable for any other work.

The present invention comprehends accomplishing the results with anordinary calculating machine without requiring a plurality oi machinecycles and without requiring a multiplicity of printing mechanisms.Briefly, the result is accomplished by momentarily arresting certainportions o! the machine while allowing others to operate, thearrangement being that, while cering which the printing mechanism isoperated a plurality of times to make the number of prints required,after which the portiony of the masame items should also be printed oneach of the three stubs which means that the same items must beprintedfour times. Four calculations are unnecessary, and as far as theoperator is concerned, he has entered the item once and shouldI notberequired to do so again.` Provision must be made' 'to have the machineprint the items four times without any attention on' the part of theoperator.

These-public utility bills must be made out every month and, in largeand medium sized centers of population, they have to be made out by thethousands. Speed and ease oi' operation thus become highly important.One method oi making out these bills has been to use an ordinarycalculating machine and to arrange the Imachine so that, after theoperator has made `to print the items in the necessary places, the

carriage traveling l. through the proper columns during the automaticoperation. 'I'his is not always as rast s desirable and, furthermore,it`

tends to wear the machine rapidly because nuchine that was momentarilyblocked is released to complete the cycle.

The general oliiectof the invention to ypro-y i vide an improvedcalculating machine. A more particular Lobject is to provide an improvedcalculating machine in which an itemmay be printed a multiplicity oftimes during a machine cycle.

A further object is to providelimproved controlling mechanism for thepaper carriage of a the accompanying drawings in which:

Figure 1L is an illustration civ-a public utility bill with certainexamples o! work thereon, said` view also illustrating diagrammaticallythe loca.-4 tion of certain carriage control rolls relative to Fig; 4'isa lett side elevation of the' machine with the invention appliedthereto, some o! the parts being omitted to illustrate others moreclearly.

Fig. 5 is a partial rear elevation of the machine with the carriage ,inits column l position, that is, its starting position at the right,viewing the machine fromthe front.

Fig. 6 is a partial front view o! the carriage return mechanism, thisview `being taken as though the main body of the machine were removedand the carriage return mechanism were viewed looking toward the rear o!the machine.

Fig. 7 is a partial perspective ot certain parts that govern thecarriage return.

Fig. 8 is a partial perspective view of the machine viewed irom theright rear corner and showing some of the control mechanism on the rear,the parts being in normal position.

Fig. 8*is a `small detail section oi a portion I of the carriagetabulating mechanism.

Fig. 9 is a partial rear view of the carriage n return mechanism,showing especially the control of the motor.

Fig. '10 is a partial right side elevation of the rear or the machineillustrating the 'printing l nar positions. f

Fig. 13 is a separated perspective of certain of the details illustratedin Fig. 12.

Fig. 14 ,is a partial right side elevation ot the machine with amodified form of the invention applied thereto, the parts being shown innormal position.

Fig. 15 isa partial right side elevation of the rear oi' the machineshowing the control oi' the printing mechanism in the modiiled form oi'the invention.

`Fig. 16 is a partial left side elevation o! the rear of the machineshowing the modiiled form of the invention applied to the machine.

Fig. 17 is a partial detail of a part of the mechanism 'for selectivelycontrolling the printing' mechanism.

The invention ls shown applied to a Burroughs Y calculating machine ofthe High keyboard" type but it will be understood that it may be appliedf to other types of machines aswell. This machine will be illustratedand described in a general way only because it is already well known,

not only from the many machines on the market, but also from thenumerous patents that have issued covering it. i

GENERAL FEATURES o r THE MACHINE The machine, which is illustratedgenerally in Y Figure 2, is of a type which, after it is properlyconditioned, is given a cycle of operation during which its variousfunctions are performed. It may be cycled manually by means of a handcrank, but most of the present-day machines are provided with a poweroperated driving means that is actuated by an electric motor I. 'I'hismotor drives the machine through a normally disengaged clutch in thehousing 2, which clutch is connectedv through the necessary cranks tothe main drive shaft I that, in turn, is suitably connected to otherparts oi' the machine to operate them. During the ilrst half cycle themotor drive actuates the machine against the tension of severalrelatively strong springs l and this portion of the cycle is sometimescalled the forward stroke" of the machine. The springs 4 act to operatethe machine to return the Aparts during the second half cycle, sometimescalled the "return stroke." The connections between the clutch 2 andshaft 3 are such that the last half of the revolution of the clutchZ-may be completed before the springs 4 return theshaft 3 to normal, butthe clutch is, in'any case, disengaged at the end ofa single fullrevolution. The parts normally move through the complete cycle in anuninterrupted manner.

The motor and clutch are normally controlled by a motor bar 5 which,when depressed, starts the motor and engages the clutch to cause saidmotor to give the machine a single cycle of operation. Depression of themotor bar rocks a. lever 6 counterclockwise and n lever 1 clockwiseV to'raise a. link B that controls the clutch and switch. The motor controlparts are latched in position by a latch 9 but normally are releasedduring the second half of the machinecycle. The motor and its controlsaredscribed in detail in Vincent Patent No. 866,750,where, however, themotor is shown as a continuously running motor. Such a motor may befused but present-day machines usually employ a normally inactive motorwhose circuit is closed by depression of the motor bar as shown inBindschedler Patents Nos. 1,658,036 `and 1,773,164. Repeat machinecycles are obtained under the control of a repeat slide III (Fig. 2) bymechanism such as shown in Muller No. 1,397,774.

motor bar, which keys may also condition other portions of the machine.Such keys are referred to as liveI keys because, when depressed tocondition the machine for a certain function, vthey also cause the motorto give the machine a cycle of operation. Such a live key is illustratedin Muller No. l1,843,648 where a special withdraw al key that conditionsthe machine for subtraction also causes Ithe machine to be given a cycleof operation. The total key is a live key in the machine illustrated, aswill be later explained.

An amount indexing means is provided for enabling fitems or amounts tobe entered in the machine. This indexing means comprises a plurality ofdepressible amount keys II of which there are usually from ninerows toseventeen rows of nine keys each. When one of these keys is depressed,it sets, or indexes, its index s top I2 for arresting the actuator ofAits bank, or order, in a diierential position corresponding to thedigital value of the key depressed. The depressed .keys are latcheddepressed during a machine cycle by latch plates I3 and they arenormally operated to release the keysI near the end of the cycle by akey restoring means of which the restoring bail is shown at I4 (Fig. 4).However, the keys may be retained depressedfor repeat machine cycles asdisclosedin Lundgren 1,033,109 and Rinsche 1,120,746,

'I'he amount differential mechanism comprises a plurality of actuatorsI5 which, as thek ma-k chine is cycled, areN released by va. 'bail'(not.

shown) that is a part of the general operating' mechanism, saidactuators descending todiffery The power drive isA often controlled fromkeys as well as from the `umnar position to another.

entlal vpositions determined by the amount keys depressed. This occursduring the first hal! l cycle, said actuators normally.v being restoredto normal by said bau during the second half cycle. These actuators andassociated parts are sometimes referred to as an "amount determiningdiiierentiar mechanism" or amount determining diierential devices, whichterms may include the amount indexing devices. l

, A printing mechanism is providedfor printing the amounts entered inthe machine as well as the totals. The type I6 (Fig. 2) of said printingmechanism are carried by the rearward ,ends of the levers I1 carryingthe actuators I5, the type thus being differentially positioned orindexed at the time the actuators are positioned. At an appropriate timeduring the machine cycle, generally near the end of the ilrst half ofthe cycle, a hammer mechanism tobe ldescribed later, is operated todrive the type against record material held about a platen Il. Afterbeing operated, the printing mechanism is normally restored'tonon-indexed, position as the levers I1 `are restored during the latterhalf ofv the machine cycle.

This printing mechanism is described in detail in Burroughs Patent `No.505,078. Said printing mechanism may be split, as described in Gooch No.825,205 and Putnam 1,018,371, and certain sections or portions of it. orall of it, may be held inactive for printing purposes by a printingcontrol or hammer block" mechanism described in .Gascon No.

for example, in Rinsche No. 1,580,534 or Muller No. 1,942,216. When itis desired that the paper carriage remains stationary, the tabulatingmechanism maybe disabled by a carriage normal key 24 such as shown inKilpatrick No. 1,152,517 and .in Muller No. 1,397,774, which. whendepressed, usually enables the line'spacing mechanism at the time ytheltabulating mechanism is disabled. This carriage normal key is often madea live key in which event it` is called a vertical spacing bar. Such abar is shown` in Muller No. 1,787,489. When depressed, it causes a cycleof machine operation, disables the tabulating mechanism and, ordinarily,enables the line spacing mechanism. The vertical spacing bars of thepresent case are described later.

The carriage is returned across the machine by a power operated carriagereturn mechanism designated generally as 25 in Fig. 2. Said mechanism isdisclosed in Rinsche No. 1,580,534. It may be set into operationvautomatically as described in said patent or by means of a carriagereturn key. This k carriage return mechanism later will be described indetail.

The tabulating and carriage return mechanisms y jointly constitute ameans for moving and con- 1,395,991 and Muller No, 1,843,648, thecontrolling cam shaft 20 being shown in Fig. 4. The printing mechanismmay also be controlled so as to print symbols to the left as disclosedin Bentzel 1,958,464. And certain portions of it may be used to l printdates as described in Wing 1,351,082; or to print characters vindicatingthe nature of the calculation, called printing "result characters," asdisclosed in White 1,018,285; or to print special characterscorresponding to special `keys bearing characters indicating specialitems such as monthsf in said Wing patent, or customers account numbers,or items such as oil or merchandise, Mdsl Such printing is known as"special character printing".

The platen I9 about which the record material is held is automaticallyline spaced at appropriate times by a line spacing mechanism such asdescribed in Kreis 913,738, Vincent 929,056 and Rinsche 1,580,534,portions of said mechanism beingI shown at 2| in Fig. 2. Saidmechanismwill be described in more detail later.

Printing is also controlled so that it may ocis controlled in saidmovement by a tabulating mechanism such as disclosed in Vincent No.929,056, and which later will be described in more detail. Normally,near the end of each machine cycle, the carriage moves from one col-This movement may be from one column to th column immediately adjacentor it may be to some other column, the control being selectivelyvariable, as described,

trolling the movement of the record material support in two directions.The present invention requires that a relative movement occur betweenthe record material and the printing mechanism and the embodiment of theinvention disclosed herein shows the record material support as themovable part. But it is to be understood that the invention is notlimited vto a specific type of construction for obtaining'said relativemovement. The terms movable record material support, or papercarriage,-will herein., after be used` for convenience but are intendedto be broad terms including all equivalent constructions for obtainingrelative movement between the record material and the vprinting 1mechanism.

A main registering or balance mechanism o capable of addition and theaccumulation of positive totals, as well as subtraction and theaccumulation of negativeftotals, is provided. This mechanism issometimes called a totalizing `mechanism, and, in the trade, is referredto as the crossfooten It is ofthe tumbling type and it comprises twosets or lines of pinions, namely,

a set of add pinions 2E intermeshing with a setl of subtract pinions.,21. The machine is normally conditioned for amount entering, inwhichoperation items are added or subtracted, and, in these operations,the registering mechanism is' normally out of 4engagement'wth theactuators while they descend to differential positions but, before theactuators start on their return movement, said registering mechanism isengaged with them to thereby receivethe entered item either additivelyorsubtractively. i Y f The machine is normally conditioned foraddition, inwhich event the add pinions engage the actuators during their ascent.Said ma` chine may be conditioned for subtraction, either manually orautomatically, as described Rinsche No. 1,172,484, PasinskilNo.1,778,506 and Pasinski No. 1,911,768, in which event the subtractpinions engage the actuators during their. y, ascent.

A manually operated subtract lever 2B is shown in Fig. 4.` Atens-transfer mechanism is associated with `said registering mechanism,said tens-transfer 4 mechanism being oi' the type employing an extra-step of movement of the actuator and being capable of enacting both"carries and borrows" as described in Rinsche No. 1,172,484.

`Total-taking control means isprovided for conditioning the machine sothat, when operated, Va total will be taken. during which, operationsaid total is normally printed. 'Ihis control means usually includes andis governed by a total key l and by a subtotal key ll. When the totalkey engagement with the actuators during their descent, the differentialpositions oi' the actuators being determined by said registeringmechanism. The registering mechanism is then disengaged while it isclear and remains disengaged during the ascent of said actuators. Whenthe subtotalv key 3i is employed the registering mechanism remains inengagement with the actuators during both their descent and ascent. sothat the total, after being taken, is returned to saidresiteringmechanism. Spacing cycles were necessary for f Il is used, theregistering mechanism remains in total taking in early machines, onecycle to make sure that the machine was in add condition and another torestore tripped tens-transfer pawls, but no spacing cycle is nownecessary except to tumble the cross-footer to the positioncorresponding to the algebraic sign of the total if it is not already inthat position when the total is to be taken, the machine .being equippedwithv the mechanism of Muller-Patent No. 1,844,070, portions or whichare shown at l2 in Fig. 2.

Negative totals may be taken directly as described in Rlnsche Patent No.1,172,484, which also describes the "fugitive 1 mechanism, a. portionofwhich is shown at Il in Fig. 2. When the The paper carriage is .providedwith a frontfeed means, portions of which are shown in Fig. 2, thatenables work sheets to be front fed with respect to the platen. Theplaten is made so that it can be thrown from a printing to a throw-backor front-feed position and vice versa, provision being made forautomatically opening and closing the front-feed throat by a powermechanism 31 (Fig. 2), as described in German Patent No. 647.638.

An ejecting mechanism It is associatedwith .said front-feed means asdescribed in Muller No.

It is to be understood that the present invention is applicable to theBurroughs machine in its various forms.

EXAHPLES Ol' WORK The mechanism will be more easily understood afterfirst having an understanding of typical examples of work that may beperformed. Three i such examples will be explained.

position of the cross-footer and the position of `A the lever 28 do notagree with the algebraic sign of the total in the cross-footer, thetotal key is locked by a negative total lock mechanism de. scribed inPasinski No. 1,778,506, and a portion of which is shown at Il (Fig. 4).After correctly positioning the lever 28 or giving the machine a.spacing stroke to "tumble the cross-footer. or

both when required, the total key may be depressed and the true negativetotaltaken directly from the subtractpinions. No spacing strokes arerequired except for tumbling the crossfooter when the position of thelatter does not correspond to the algebraic sign of the total in thecross-footer when the total is to be A plurality of multiple registers3l (Fig. 2) are also provided, such being shown `and described inPasinski Patent No. 1,911,768. 'Ihese registers may 'ne selectedautomatically, as described in said Pasinski patent, or they may beselectedl manually from the keyboard, as described in Pasinski No.1,909,715. Said multiple registers have a tens-transfer mechanismassociated with them of the type disclosed in Pasinski No.

Example No. 1

The first example is a simple one onvolving only a single line ofentries in which a customer is billed only for the electricity used byhim. This example is illustrated by the top lin'e of entries in Fig. 1.

With the paper carriage in its No. 1 columnar position, the operatorenters, the date, May 15;

the present meter reading 888; and the previous meter reading, 555. Hethen gives the machine a cycle of operation by depressing the regularmotor bar during which cycle the entered items are printed in column 1as indicated. -The machine is split into three lsections so that thedate, the present meter reading, and the previous meter reading areprinted in spaced relation by the several sections of the machine. 'I'hedate keys are usually latched down for the entire days run so theoperator never enters the date more than once for the day, said datebeing automat- Y ically printed for subsequent entries.

1,774,289. Totalsand subtotals may be taken 'under the control of thetotal lever 38 (Fig. 4) as described in Pasinski No. 1,778,506. Totals,

either positive or negative, may be transferred from the mainregistering mechanism to any` selected multiple register as described inPasinski No. 1,911,768, and totals in any selected multiple register maybe transferred positively or negatively to the main registeringmechanism.r

The functions performed by the machine during machine cycles, lincludingrepeat.' machine i cycles, carriage movement and the control of the,

printing mechanism, may be governed automatically, and this is done bycontrolling the condition of the machine in accordance with the con- Theoperator then enters the amount of electricity used, 333, and the netamount due, $4.50.

from which the operator makes the entry. The amount due is alreadyprecalculated according to a rate schedule. These two items must' appearin four dierent places on the form, vnamely on the customers bill" andon each Iof the three stubs. As previously mentioned, multiple printingoperations occur while a relative lateral movement takes place betweenthe printing mechanism and the bill, said lateral movement beingaccomplished in the present embodiment of the invention -by lateralmovement of the paper carriage. ,This requires that the paper carriagemove `through columns 2,'3 and 4 to column`5. Y If the carriage is movedto its column 5 position,

The item 333 is usually precalculated byl the meter reader and appearsin his book,

piece of merchandise.

insofar as timing is concerned, it is immaterial whether the multipleprinting of' the items occurs while the carriage is moving fromy column1 to column or while it is returning from column 5 to column l, the twomovements being necessary -in any event. In the present embodiment it ispreferred to have the multiple printing occur while the carriage isreturning from column 5 to column 1 because, during such return, thecarriage'is moved directly by the power of the electric motor and thereis ample force available to operate such mechanisms as it may benecessary'to operate.

Accordingly, in the present machine nov ta-b i Y stops are provided incolumns 2, 3 and 4, with the result that when the carriage is releasednear the end of the machine cycle in column 1 it moves $4.50, previouslyreferred to, is made with the'4 carriage in column 5, the date keyshaving already been set. The operator then givesthe ma- I'he nrst-lineof entries'is' started as' above lexplained and `the papercarrier movesto its No.

y 5 column. Here''the operator again enters the amount of current used,333, and the net' amount due, $4.50, but, because of the nature of thesecond'item of $1.25, he depresses a special motor bar. During theVensuing cycle, the carriage returns through columns 4, 3 and 2 andprints the items in each column but, instead of moving into column I andstopping, the carriage moves only a short distance beyond column 2 andthen returns automatically to column 5. The operator then enters"` theamount of $1.25 and depressesthe special motor `bar again during whichacycle occurs in which the $1.25 is added to the $4.50 that` was firstentered and the carriage travels through columns 4, 3 and 2, in each ofwhich $1.25 is printed, slightly past column 2, and then returnsautomaticallyY to column 5 again. Here the operator depresses the l'total key and, in the ensuing cycle, the carriage chine a cycle of.operation during which said entry is printed in column 5 andtheinvention comes into play to cause the return of the car-v riage tocolumn l during which return the entry consisting of the items 333 and$4.50," and the date'fwhex'e desired, will be printed in ,columnsl4, 3`and 2 and the machine willfcomplete its cycle with the carriagemovinginto the No. 1 column. The vbill is automatically ejectedin columnI and the machine is in condition for the next bill. The movement of thecarriage in these operations requires very little time because thecarriage does not hesitate or stop in columns 2, 3 or 4 while it ismoving fror'ncolumn 1 to column 5 or from column 5 vto `column 1,. Theprinting that occurs during the return of the carriage oc- `curs whilethe carriage moves, the printing `mechanism' operating so rapidly thatclear impressions are obtained without blurring and without requiringany hesitation in themovement of said carriage.

E'azample No. 2

' an auxiliary motor -bar with the carriage in column 5, said carriagewill return to its column 1 position and multiple printing will occur asabove described but, when the carriage arrives in column 1, thefront-feed throat will not be opened,

sheet will be line spaced. i This particular example of work has not beethe sheet will remain in the machine, and said illustrated in Fig. 1 asit simply involves another line of entries similar to the first lineillustrated.`

Example No. 3

In Example No. 3 the customers bill contains aline of entries such asthe top line in Fig. 1, but to this there must be added a. charge of$1.25 for an item purchased, such, for example, as a moves throughcolumns 4, 3 and 2, in each of which columns the total $5.75 is printedalong with the amount of electricity consumed, 333, and the date, thecarriage then moving into the No. 1 column where the sheet is ejectedand the machine is'in condition to receive the next bill.

It is to beunderstood that the above are merely typical examples andthat many variations in the exact manner in whichthe machine is used aremade to suit `the customers requirements.

CARRIAGE Movmo MEANS AND CoNrnoL Tamron Provision is made `for movingthe carriage 22 back and, forth across the machine, and in theembodiment of the invention disclosedsaid carriage is moved in onedirection by a spring in the drum 23 (Fig. 4), the movement in thisdirection being under the control of the tabulat ing mechanism. Thecarriage is moved in the other direction by an electric motor though themedium of the carriage return mechanism 25 (Fig. 2).

Tabulatng mechanism The tabulating mechanism is of the type disclosed inRinsche 1,580,534 and other Burroughs patents for which reason it willbe described only brieiiy. Referring to Figs. 2 and 5, the papercarriage supports a rockable tab bar 40, carrying a` plurality ofreadily adjustable tab stops 4I.

These tab stops `are positionedvto ,engage an abutment 42 (Fig. 8),mounted on a.y stationary back plate 43 of the machine. At anappropriate time during the machine cycle, usually during the latterhalf thereof, the tab bar is momentarily rocked to raise the active tabstop 4| above the abutment42, whereupon the carriage spring moves thecarriage laterally, said carriage being arrested in its next position bythe next tab stop, the tab bar having been released4 in time to permitthe succeeding tab stop to become active. The tab bar is rocked bymechanism, Aas follows:

Referring to Fig. 2, the main machine shaft 3.

which is rst rocked clockwise and then re-V turned counterclockwiseduring a machinefcycle, has a crank arm 44 xed to it so as to rock withit. This crank arm has a cam slot in it in which a roller. stud on theend ofa lever 45 operates, said lever being pivoted at 46 and having apin and fork connection 41 at its rear with a lug 43 (Fig.` 8) on aslide 50 mounted to move up and down on studs 5l on the back plate 43.The slide 53 has a tabulating pawl 52 'pivoted to it at 53 and urgedcounterclockwise by a spring 54, as shown in Fig. 8. During the rst halfof a machine cycle, the lever 45 (Fig. 2) is rocked clockwisev and theslide 58 (Fig. 8) is moved downwardly, whereupon the pawl 52 moves downunti1 it reaches a position where its spring. 54 moves it under theactive vtab stop 4| so that, when said slide 58 is moved upward duringthe latter half of the cycle, the pawl 52 will engage said tab stop androck the tab bar 48 and stop l 4I to raisefsaid stop above the abutment42 (Figf ited sliding movement on stud 8| on the stationary plate 15. Inthe normal position of the 'parts as viewed in Fig. 6, the slide'88 isinits rightmost position and the control lever 13Y is in itscounterclockwise position.' Fig. 9 illustrates these parts in theiropposite positions.

In the usual construction of this'carriage re turn, the automaticcontrol is as follows: During l'the latter half of a machine cyclezwiththe carriage'ir'racolumnar position from whichit is to be returnedthecarriage is releasedby the tabulating mechanism and it moves slightlyVto the left as Viewed from the front or to "the right in Fig. 5. As the'carriage l1noves a. .sto`pon the carriage, such as the stop 82show'n'iatftlie left' of Fig. 5, engages the end oi the slide' 88 andmoves j it to the right as viewed in Figs. 5' and' 9.

68 has two setsof projections 8| and 52 on itsL upper end which straddlea line spacing bail 53.

,The slide 68 may be connected to the slide 58 by a connecting paw] 84pivoted at 65 to the slide 58 and urged counterclockwise by a spring 56.If said pawl 54 is moved clockwise Irom the position of Fig. 8, aprojection 61 on it enters a notch `58 in the slide 58, and this servestocon- 'neet the two slides 58 and B8 together. When this occurs, andwhen the slide 58 isl moved downward at the beginning of a machinecycle, the lugs The slide 88'carries a member 84 (Fig. 9) pivoted to itat 85 and urged clockwise in Fig. 9 by a fairly strong spring 88. Whenthe slide 88 y is init's normal position tothe right (Fi'g.` 6) theupper edge of the` member 84 is under a stud 81 'on the stationary plate1,5, said stud blocking the member 84 against counterclockwise movement(Fig. 6) When the slide 88is moved ,to -the left,

as viewed in Fig. 6; to its Figs position Aby the slight movement of thecarriageas explained GIP-62 on the slide 88 rock the line spacing bail63 downward and then, during the latterhalf of the machine cycle, rock'it'upward again to operate the line spacing parts 2l to line space theplaten.

In the example of work shown in Fig l, when the machine is given a cycleof operation withthe carriage in its No. 1 column, the tabulatingmechanism is operated during the latter half of the cycle, whereupon thecarriage moves through columns 2, 8 and 4 to column 5. In other words,vthere is no tab stop for columns 2, 8 and 4,'and the carriage is'notarrested in any of these columnar positions.

Carriage return mechanism,

The carriage return mechanism is also disclosed in said Rinsche PatentNo. 1,580,534. It is driven bythe electric motor I operating throughmechanism contained in the housing to which the numeral 25 is applied inFig. 2. This mechanism drives the gear 18 (Fig. 6) to which the gear 1 Imay' be clutched by a clutch mechanism 12l the gearll being in mesh witha rack 1I* on the paper carriage (Figs. 5 and 6). The ,clutch'12 iscontrolled by a clutch control lever 13 pivoted at 14 to a stationaryplate 15 ilxed to the housing 25. The carriage return mechanismillustrated herein is that of said Rinsche patent with rennements .thathavebeen made since the date of said patent. The normal construction ofthe carriage return will be described first and the changesv for thepresent invention then explained.

As stated, the carriage return clutch 12 is controlled by a controllever 13 pivoted at 14, said lever being releasably held in either oftwo positions by a spring-'urged detent 15 having a stud 11 engagingnotches' in a projection on the control lever 13. Said control lever 18is controlled automatically by the paper carriage or it may begovernedby a carriage return key on the keyboard.

The automatic control by the carriage is eflected by` means of anirregular shaped slide 88, shown in Figs'. "6 andl 8, mounted tohave alimabove, the plvotedmember 84 moves with it, with the result rthat anotch 88 in the upperedge of the member 84 comes into register with thestud 81. `The member 84 is thereupon rocked clockwise as viewed in Fig.9 by its spring^85 and the abutment end 88 of said member engages a stud98 on the control lever 13 to rock said lever counterclockwise (Fig, 9)to thereby engage the clutch of the carriage return mechanism. Saidmechanism then returns the carriage. to the column where it is to bestopped. Provision is made for causing the' motor to continue tooperateas long as the carriage, return vmechanism is engaged.

As the carriage approaches the .position where it is to be stopped; acarriage control member |88 (Fig, 5) on the .carriage disengages theclutch and restores the parts to normal. This member |88 has aprojection I8I which engages the end |82 (Fig. 9) oi the member 84. Themember`84 is rst rocked counterclockwise in Fig. 9' to carry the notch88 away from stud 81, after which the pressure on said member 84 movesthe slide 88 to the left in Fig. 9 to thereby. restore'said slide to`normal and also'to move the upperedge ofthe member 84 under the-stud81. At about the same -time a cam projection |83 (Fig. 5) on thecarriage control member |88 engages and cams downward- 1y a stud 2 I 1on the control lever 13 and thus rocks said lever clockwise inFig. 9 todisengage the carriageV return clutch.

A manual control is provided in the form of a carriage return key III)l(Fig. 3) `which is urged upward by a spring III. The lower end of thestem of thisv key is connected to one arm of a bell 'crank vII2 pivotedto the machineat H8. The

other arm of thel bell crank II2. is pivotally connected to an arm of asecond bell crank lever I I4 A 13 has positioned astride Vit the forkedend of a 'link r8| connected at its lower end to one arm of a bell crank82 pivoted at 83.V A spring also i switch. Y

' tor is operated to give the` machine a cycle.

connects" tnc stud sl with thc bcn crank sz; f

The .other arm `of the bellcrank-has a stud and at 93. The switch arm 36carries a pair of switch contacts 31 adapted to contact the contacts 98to openand close the motor circuit 33. When the` control lever 13 Iis inits position where the carriage return clutch is disengaged, which is aclockwise position from that shown in Fig. 9, the motor switch is open.However, when the 'control lever 13 yis moved counterolockwise, as

viewed in Fig. 9, to close the carriage return clutch, said lever 13,acting through the link 9| land spring 34, closes the motor switch andkeeps it closed as long as the1ever13 is in clutch en-" gagingposition.` Thus, the motor continues to run until the carriage reachesa` position where the 4carriage return mechanism` is disabled, whereuponthe control lever 18 vwill be-moved.` to ,disengage :the clutch and`open the motor The abovecarriagereturn mechanism has been modified inthe present invention to nget certain operate. The slidek 20 is mountedfor a limited movement on studs |2| on the slide 80 and urged to theright as viewed in Fig. 61by a spring |22.

, This 'secondary slide hasa lug |2I formed with a slot in which ispositioned' a stud |23b on one farm of `abell crank |23 pivoted at |24on aprojccting portion |25` of the sudest. 'rnc other arm of this bellcrank |23 has a lateral lug |23a adapted to be 'engaged by one .arm of abell crank |26 pivoted to theistationary plate 15 at4 |21,- the otherarm of said bell crank |26 being `pivotl ally connected to theV upperend of a link |28.

The link |28 is urged upwardand the bell vcrank slot connection ss withc. switcnarm se pivotedv the column from which the carriage is to be re-`turned',l the carriage stop82 engages the end of the secondary slideand `moves it to the left in Fig, 6. This rocks the bell crank |23counterclockwise and positions the lug |23EL in front of l the arm ofthe .bell crank |26."` When the motor is energized` with the carriage incolumn 5 toy give the machine a cycle of operation, the shaft |38 (Fig.2) rotates. The parts are timed so that,l

after the printing mechanism has operated, the lever |32` (Fig. 2) isrocked clockwise which pulls the link |28downward, rocks the bell crank|26 (Fig, 6) counterclockwise, and,f said bell crank, acting on bellcrank |23 pivoted to slide' 80, moves said slide to the left in Fig. 6.This movement of slide 30 engages the` carriage return clutch asheretofore explained, whereupon `the motor returns the carriage towardits column 1 position where the clutch is disengagedy by the carriagecontrol'cam |03,\as also explained. I f Although the link |28 is moveddown durin f each machine cycle, it does not set the carriage returnmechanism into operation except in selected carriage positions where the.stop 82 moves the secondary'slide |20 to position the lug` |23l infront 'of the arm of the bell *crank |26.

There are several other features of thereturn mechanism which act duringthe above operation is urged clockwise againsta limit stud on the j Thelever |32 is illustrated in Fig. 2 and, as there shown, is pivoted at|34 to a stationary portion of the machine. The forward end of the leverhas 'a nos |35 positioned in the path of a stud |36 on a crank |31 xedto the clutch shaft |38.

This shaft isgiven a `rotation every time the mo- It will be recalledthat, in the Burroughs machine, when the motor bar is depressed themotor drive operates to actuate the machine through` the first half ofits cycle, after which the motor drive 'moves away from the Lmainyoperating meansv which isreturned to normal by the springs 4 (Fig. 2).

The normal position of theparts |32-I31'is shown in Fig. 2. Whenthemachlne is given a vcyclepf operation the shaft |38 rotatescounterclockwise for a revolution and near the end of this revolutionthe stud |36 engages the nose |35 and rocks'the lever |32 clockwise.This. moves the stud`|3| (Fig. '7) downwardly and said stud, acting onpawl |30,`moves the link |28 downward.

In the examples of work shown, when thecarriage moves into its column 5position, which is but these can be described moreclearlyafter thedifferent controls` for the carriage return mecha' nism are described.These several controls will be separately described. j t l Control ofcarriage movement when regular v t motor bar is depressed 1 When only asingle line of entries is to be made, as, for example, the top line inthe example illustrated in Fig. 1, the operator makes the necessaryentries withthe carriage yin column I'and then 4depresses the regularmotor bar whereupon the machine is given a cycley during the latter partof which the carriage moves in tabulating direction from the No. 1 tothe No. 5 column. He then makes the necessary entries in column Fand,

ordinarily, depresses the regular motor bar whereupon a. machine cycleis started during which the entry is printed in column Bland thecarriage returns to column multiple prints being made in columns 4, 3and 2, as will be presently explained. l i

When the regular motor bar 5 is'depressed in column 5, a machine cycleisstarted and-the printing mechanism operates.

After printing has occurred, the link |28 is moved 'downwardly whereuponthe carriage return mechanism is set into operation, the secondary slide|20 having been set by the carriage stop 82 in the column 5 position.The` carriage returns across-the machine till it reaches the No. 1column where the cam member |03 (Fig. 5) disengages the clutch andrestores the parts to normal as heretofore explained. f As thecarriage'moves into its No. l column `a control stud |40 (Figs. 2 and 5)on a bail |4| on the carriage hits a pawl |42 on a latch which isthereby `movedto release the` power operated throat opening means-31 andthe ejecting mechanism 38 to open the frontfced throat and eject thebill.` ,t

There isqa further phase ofthe control of the carriage return mechanismwhen the regular.

Control of the slide -opened and the sheet will not be ejected.

stead, the sheet will remain in the machine to recarriage rr'rlooemcrttwhenauxiliary "motor bar is depressed As heretofore explained, itsometimes happens that a bill must be made out with two single lines ofentries such as the rst line in the examples of Fig. l; For example, acustomer may use both gas and electricity, in which event one linecovers entries for electricity and a second line the entries for gas. Inthat event, after the carriage reaches column in the iirst line ofentries, and after making; the entries in column 5, the operatordepresses a motor bar 150 (Fig. 2) which, for'pur-Y poses ofconvenience, will be called the auxillary motor bar. Depression of themotor bar |50 causes the Vsame type of operation as whenthe regularmotor bar 5 is depressed except that, when the carriage reaches its No.l. column, the iront-feed throat is not opened and the sheet' is notejected.

Referring to Fig. 2, the auxiliary motor bar |50 hasa stem |5| carryinga bell crank |52,

one arm of ,which is connected lto the vlever 1 forming a part of themain motor bar mechalatched in depressed position, but manual depressionof the main motor bar will not carry down the auxiliary motor bar. Thisintercon- `nection of an auxiliary and a main motor bar is a familiartype of connection on the Burroughs machine and has been disclosed innumerous prior patents.

The stem |5| of the auxiliary motor bar extends downwardly and its lowerend (Fig. 3) carries a stud |53 positioned over one arm |54 of a bellcrank pivoted at |55. The other arm |56 of this bell crank has a studand slot connection with an arm |51 fixed to a shaft |58 that extendstoward the center of the machine and which carries on its other end anarrn |80 (Figs.2 and 3) extending toward the rear ofthe machine. Therearward endof the arm |60 is connected to a slide |6| whose upperabutment end |62 (Fig. 5) is positioned under a stud |63' on the pawl|42 that controls the throat opening and ejecting mechanisms disclosedin Muller 2,110,399.

When the auxiliary motor bar |50 is depressed, |6| (Fig. 5) is moveddownwardly which allows the pawl |42 to move clockwise under the urge ofits spring (not shown) so that it will not be engaged by the study|40'on the paper carriage as the paper carriage moves into its` No. lcolumnar position. Accordingly, when the carriage reaches the column lposition, after depression of auxiliaryI `motor bar |50, the front-feedthroat will not be |61 and the other arm having a spring held pawl |68pivoted to it. When the carriage moves into column 5, an extra longcarriage tab stop 4|, such as shown in dotted lines in Fig. 8, engagesthe cam nose |81 and rocks the bail |66 clockwise (Fig. 8) which causespawl |68 to rock member 64 to connect the slide 60 to the slide 50.During the rst portion of the cycle in column 5 the two slides arepulled down-which pulls the line space pawl of the line spacingmechanism 2| v(Fig. 2) to operating position. The slides 50 and 60 arenot moved upward until the carriage reaches` its column position wherethe machine cycle is completed. When said slides are Amoved upward incolumn I, the platen is linefspaced. This occurs every time the machineis operated in column 5, the platen being line spaced no matter whetherthe carriage stops in column or returns to column 5.

The second line of entries in the two-line example is made in the samemanner as the first but in the column 5 position of the carriage theoperator-depresses the regular motor bar 5 and during the ensuing cyclethe carriage returns to its column 1 position, where the sheet with thetwo entries on it is elected.

Control of carriage movement when special motor bar is depressed The"special motor bar |10 (Fig. 2) has a stem having lateral projection |12positioned above a stud |13 on one of the stems of the main motor bar 5so that, when the special motor bar f is depressed, the main motor barwill go down with it and a machine cycle will be started, vbutdepression of the main motor bar will not carry down the special bar. v

The stem |1| of the special motor bar carries a stud |14 (Figs. 1 and3') roverlying one end of a lever |15 pivoted at |16 to the machineframe and urged clockwise by a spring |11. The other end-of this leveris pivotally connected toone end of a lever |18 (Fig, 3) pivoted at |18.Near its other end the lever |18 has a shoulder |80 normally positionedin front of a stud |8| on a lever |82 pivoted at |83 and urged clockwiseby a spring |84. The lever |82 is normally held against clockwisemovement by the three-arm member |85 which is' a standard partof theBurroughs machine. This three-arm member normally occupies the positionshown in Fig. 3, being spring urged clockwise but prevented from vmovingvby the full stroke sector |86. As the machine is given a cycle ofoperation, the full stroke sector |88 moves counterclockwise, whereuponthe threearm member |85 is released and it moves clockwise, the partsbeing restored to normal during the latter half lof the machine cycle.Thus, it will be apparent that during the rst half of a machine cyclethe lever |82 will move clockwise unless prevented from doing so by theshoulder on lever |18 engaging the stud |8| on the lever |82.

When the special motor bar is depressed. the lever |18 is rockedclockwise to remove the shoulder |80 from the path of stud I8| and,consequently, during cycles of machine operation initiated by depressionoi' the "Special" motor

